.one{
    height: 200px;
    width: 200px;
    border: solid 1px pink;
    border-radius: 10px 50px 90px;
}
.two{
    height: 100px;
    width: 100px;
    border: skyblue 2px solid;
    border-radius: 50%;
}
.three{
    height: 100px;
    width: 100px;
    border-top: orangered 2px solid;
    border-bottom: orangered 2px solid;
    border-left: green 2px solid;
    border-right: green 2px solid;
    border-radius: 10px 40px;
}
table{
    border: blueviolet 1px solid;
    border-collapse: collapse;

}
td{
    border: lightcoral 1px solid;
    /*border-radius: 20%;*/
}
.four{
    height: 200px;
    width: 200px;
    border: chartreuse 1px dashed;
    /*padding: 10px ; 上下左右*/
    /*padding: 10px 20px; 上下 左右*/
    /*padding: 10px 20px 30px; 上 左右 下*/
    /*padding: 10px 20px 30px 40px; 上 右 下 左*/
    /*padding-left: 20px;*/
    /*padding-right: 40px;*/
}